PURPOSE: To provide a loading box capable of making a uniform water content profile in the transverse direction of a web.

CONSTITUTION: This loading box adjustable in each zone of a former of a paper making machine or a cardboard making machine is provided by having a twine wire part including wires 13 placed one above the other and running in the same transfer direction in the former, mounting a drain box 8 at the one side of the wires 13 in the twine wire part for removing water from a fibrous pulp traveling between the wires 13. At the opposite side of the wires, the loading box is mounted and is provided with many loading ribs 22 arranged in the transverse direction in relation to the transfer direction and which extend across the web within. The loading ribs are loaded toward the bottom of the drain box in order to produce a desired compression in the fibrous pulp running between wires 13.